Application: gvSIG desktop » gvSIG data provider for GPE

package org.gvsig.gpe.gml.parser.v2.features;

import java.io.IOException;

import javax.xml.namespace.QName;

import org.gvsig.gpe.gml.parser.GPEDefaultGmlParser;

import org.gvsig.gpe.gml.parser.profiles.IBindingProfile;

import org.gvsig.gpe.gml.utils.GMLGeometries;

import org.gvsig.gpe.gml.utils.GMLTags;

import org.gvsig.gpe.gml.utils.GMLUtilsParser;

import org.gvsig.gpe.parser.IGPEContentHandler;

import org.gvsig.gpe.xml.stream.EventType;

import org.gvsig.gpe.xml.stream.IXmlStreamReader;

import org.gvsig.gpe.xml.stream.XmlStreamException;

import org.gvsig.gpe.xml.utils.CompareUtils;

import org.gvsig.gpe.xml.utils.XMLAttributesIterator;

import org.gvsig.xmlschema.som.IXSElementDeclaration;

import org.gvsig.xmlschema.utils.TypeUtils;

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

/* CVS MESSAGES:

 *

 * $Id: ElementTypeBinding.java 350 2008-01-09 12:53:07Z jpiera $

 * $Log$

 * Revision 1.8  2007/06/14 13:50:05  jorpiell

 * The schema jar name has been changed

 *

 * Revision 1.7  2007/06/07 14:53:30  jorpiell

 * Add the schema support

 *

 * Revision 1.6  2007/05/18 10:41:01  csanchez

 * Actualizaci?n libGPE-GML eliminaci?n de clases inecesarias

 *

 * Revision 1.5  2007/05/16 13:00:48  csanchez

 * Actualizaci?n de libGPE-GML

 *

 * Revision 1.4  2007/05/15 09:51:59  jorpiell

 * The namespace is deleted from the element name

 *

 * Revision 1.3  2007/05/15 09:35:09  jorpiell

 * the tag names cant have blanc spaces

 *

 * Revision 1.2  2007/05/15 08:04:16  jorpiell

 * If the element type is a geometry, the element value wiil be the toString geometry method

 *

 * Revision 1.1  2007/05/14 09:30:30  jorpiell

 * Add the FeatureMember tag

 *

 *

 */

/**

 * This class is used to parse some xml tags that

 * represents a xml element. 

 * @author Jorge Piera LLodr? (jorge.piera@iver.es)

 * @see http://www.w3.org/XML/Schema

 */

public class ElementTypeBinding {

        /**

         * It parses a xml element

         * @param parser

         * The XML parser

         * @param handler

         * The GPE parser that contains the content handler and

         * the error handler

         * @param feature

         * The feature is needed to add the geometry

         * @param parentElement

         * The parent element

         * @return

         * A Element

         * @throws XmlStreamException

         * @throws IOException

         */

        public Object parse(IXmlStreamReader parser,GPEDefaultGmlParser handler, Object feature, Object parentElement, IXSElementDeclaration parentType) throws XmlStreamException, IOException {

        parser.require(EventType.START_ELEMENT, null, null);

                boolean endFeature = false;

                boolean isGeometryTag = false;

                EventType currentEvent;                

                Object element = null;        

                Object value = null;

                Object geometry = null;

                boolean isInitialized = false;

                //Used to finish to parse the current element

                final QName elementRootType = parser.getElementName();

                String type = null;        

                XMLAttributesIterator attributesIterator = new XMLAttributesIterator(parser);

                //Find the element type

                IXSElementDeclaration elementType = null;

                if (parentType != null){

                        elementType = parentType.getSubElementByName(elementRootType.getLocalPart());

                        if (elementType == null){

                                type = TypeUtils.getXSType(String.class);

                        }else{

                                type = elementType.getTypeName();

                        }

                }else{

                        type = TypeUtils.getXSType(String.class);

                }

                QName tag = parser.getElementName();

                currentEvent = parser.getEventType();

        final IGPEContentHandler contentHandler = handler.getContentHandler();

        final IBindingProfile profile = handler.getProfile();

        final String namespaceURI = elementRootType.getNamespaceURI();

        final String localName = GMLUtilsParser.removeBlancSymbol(elementRootType.getLocalPart());

                while (!endFeature){

            switch(currentEvent.getCode()){

                        case EventType.START_ELEMENT_CODE:

                                if (!(CompareUtils.compareWithNamespace(tag,elementRootType))){

                                        //If is a geometry

                    if (GMLGeometries.isGML(tag)){

                        geometry = profile.getGeometryBinding().parse(parser, handler);

                        contentHandler.addGeometryToFeature(geometry, feature);

                        if (geometry == null) {

                            System.out.println("\t\t\tGEOMETRIA VACIA");

                            // Warning geometria vacia

                        }

                        isGeometryTag = true;

                                        }else {

                                                //If is not a geometry could be a complex feature

                                                if (!isInitialized){

                            element = contentHandler.startElement(namespaceURI, localName, null,

                                    attributesIterator, parentElement);

                            isInitialized = true;

                                                }

                        final ElementTypeBinding elementTypeBinding = profile

                                .getElementTypeBinding();

                        elementTypeBinding.parse(parser, handler, feature, element, null);

                                        }                                

                                }

                                break;

                        case EventType.END_ELEMENT_CODE:

                                if (CompareUtils.compareWithNamespace(tag,elementRootType)){                                                

                                        endFeature = true;

                                        //If not is complex the element has not been created yet

                                        if (!isInitialized){

                        element = contentHandler.startElement(namespaceURI, localName, value,

                                attributesIterator, parentElement);

                                                isInitialized = true;

                                        }

                                        contentHandler.endElement(element);

                                }

                                break;

                        default:

                if (currentEvent.isValue()) {

                    if (geometry == null) {

                        switch (currentEvent.getCode()) {

                        case EventType.VALUE_BOOL_CODE:

                            value = Boolean.valueOf(parser.getBooleanValue());

                            break;

                        case EventType.VALUE_BYTE_CODE:

                            value = new Integer(parser.getByteValue());

                            break;

                        case EventType.VALUE_DOUBLE_CODE:

                            value = new Double(parser.getDoubleValue());

                            break;

                        case EventType.VALUE_FLOAT_CODE:

                            value = new Float(parser.getFloatValue());

                            break;

                        case EventType.VALUE_INT_CODE:

                            value = new Integer(parser.getIntValue());

                            break;

                        case EventType.VALUE_LONG_CODE:

                            value = new Long(parser.getLongValue());

                            break;

                        default:

                            value = TypeUtils.getValue(elementType, parser.getText());

                            break;

                        }

                    }

                }

                                break;

                        }

                        if (!endFeature){                                        

                                currentEvent = parser.next();

                                if(currentEvent.isTag()){

                                    tag = parser.getElementName();

                                }

                        }

                }

                parser.require(EventType.END_ELEMENT, elementRootType);

                return element;                

        }

}